Abstract: BonFIRE [1] is a multi-site testbed for Cloud and distributed applications. It is designed and operated as a specialised resource for testing and experimentation. The value of BonFIRE comes from functionality that one needs for testing and validation, but is not available from commercial Cloud offerings; combined with large, international scale that one may not get on owned clouds. BonFIRE also includes functionality to test network-related aspects.